Charlie Li Zha

US Patent:

20140052693, Feb 20, 2014

Filed:

Oct 21, 2013

Appl. No.:

14/058873

Inventors:

Charlie Li Zha - Palo Alto CA, US
Jedidiah Yueh - Menlo Park CA, US
Alok Kumar Srivastava - Newark CA, US

International Classification:

G06F 17/30

US Classification:

707639

Abstract:

Information from multiple databases is retrieved and stored on a database storage system. Multiple point-in-time copies are obtained for each database. A point-in-time copy retrieves data changed in the database since the retrieval of a previous point-in-time copy. A virtual database (VDB) is created by creating a set of files in the data storage system. Each file in the set of files created for a VDB is linked to the database blocks on the database storage system associated with a point-in-time copy of the source database. The set of files associated with the VDB are mounted on a database server allowing the database server to read from and write to the set of files. Workflows based on VDBs allow various usage scenarios based on databases to be implemented efficiently, for example, testing and development, backup and recovery, and data warehouse building.

US Patent:

20110093435, Apr 21, 2011

Filed:

Oct 21, 2009

Appl. No.:

12/603541

Inventors:

Charlie Li Zha - Palo Alto CA, US
Jedidiah Yueh - Menlo Park CA, US

Assignee:

DELPHIX CORP. - Palo Alto CA

International Classification:

G06F 17/30
G06F 12/00

US Classification:

707639, 707E1701, 707E17032, 711E12001, 711E12103

Abstract:

Information from multiple databases is retrieved and stored on a database storage system. Multiple point-in-time copies are obtained for each database. A point-in-time copy retrieves data changed in the database since the retrieval of a previous point-in-time copy. A virtual database (VDB) is created by creating a set of files in the data storage system. Each file in the set of files created for a VDB is linked to the database blocks on the database storage system associated with a point-in-time copy of the source database. The set of files associated with the VDB are mounted on a database server allowing the database server to read from and write to the set of files. Workflows based on VDBs allow various usage scenarios based on databases to be implemented efficiently, for example, testing and development, backup and recovery, and data warehouse building.